A H-IIA rocket carrying Hayabusa 2 space probe blasts off from the launching pad at Tanegashima Space Center on the Japanese southwestern island of Tanegashima, in this photo taken by Kyodo December 3, 2014. The Japanese space probe named for a falcon blasted off on Wednesday, setting off on a six-year round trip journey to an asteroid for samples that scientists hope will help reveal the origins of life. The launch of the Hayabusa 2, postponed twice due to bad weather, comes less than a month after a European Space Agency probe landed on a comet in a pioneering mission and helps Japan's space programme put a troubled past further behind it. (Photo by Reuters/Kyodo News)

A worker rides his bicycle past fuel trucks loading their cargo at a state-owned Pertamina fuel depot in Jakarta December 3, 2014. (Photo by Darren Whiteside/Reuters)

A drought-related cactus installation called “Desert of Cantareira” by Brazilian artist and activist Mundano is seen at Atibainha dam, part of the Cantareira reservoir, during a drought in Nazare Paulista, Sao Paulo December 2, 2014. Sao Paulo, Brazil's drought-hit megacity of 20 million, has about two months of guaranteed water supply remaining as it taps into the second of three emergency reserves, officials say. (Photo by Nacho Doce/Reuters)

Micromax Indian Aces' Ana Ivanovic of Serbia reacts as Singapore Slammers' Serena Williams of the U.S. challenges a line call during their women's singles match at the International Premier Tennis League (IPTL) in Singapore, December 3, 2014. (Photo by Edgar Su/Reuters)

A member of staff from the Natural History Museum poses for a photograph next to the world's most complete Stegosaurus skeleton, in London December 3, 2014. The 150 million year old Stegosaurus stenops is the first complete dinosaur skeleton to go on display at the Natural History Museum in nearly 100 years. (Photo by Paul Hackett/Reuters)

A bench covered in ice on Buda Hills in Budapest, December 3, 2014. Tens of thousand of homes on the outskirts of Budapest went without electricity this week as freezing rain blanketed the area and falling trees cut power lines, Hungary's Disaster Relief Agency said. (Photo by Bernadett Szabo/Reuters)

Trees covered in snow on the summit plateau of the “Grosser Feldberg” mountain in the Taunus area, Hesse, Germany, 03 December 2014. (Photo by Frank Rumpenhorst/EPA)

A visitor aims a gun at an exhibit during the International Defence Exhibition and Seminar (IDEAS 2014) in Karachi December 3, 2014. At least 88 delegations from 47 countries took part at the 8th biennial IDEAS 2014 at the Karachi Expo Centre, local media reported. (Photo by Akhtar Soomro/Reuters)

An army officer instructs a visitor as she aims a simulation gun at a target, at an exhibit during the International Defence Exhibition and Seminar (IDEAS 2014) in Karachi, December 3, 2014. (Photo by Akhtar Soomro/Reuters)

Saudi youths demonstrate a stunt known as “sidewall skiing” (driving on two wheels) in the northern city of Tabuk, in Saudi Arabia December 3, 2014. (Photo by Mohamed Al Hwaity/Reuters)

Saudi youths demonstrate a stunt known as “sidewall skiing” (driving on two wheels) in the northern city of Tabuk, in Saudi Arabia December 3, 2014. (Photo by Mohamed Al Hwaity/Reuters)

Saudi youths demonstrate a stunt known as “sidewall skiing” (driving on two wheels) in the northern city of Tabuk, in Saudi Arabia December 3, 2014. (Photo by Mohamed Al Hwaity/Reuters)

Saudi youths demonstrate a stunt known as “sidewall skiing” (driving on two wheels) in the northern city of Tabuk, in Saudi Arabia December 3, 2014. (Photo by Mohamed Al Hwaity/Reuters)

Volunteers attempt to shop blindfolded during an event to mark the International Day of Persons with Disabilities, at a supermarket in Mianyang, Sichuan province December 3, 2014. The event held on Wednesday aimed to raise awareness of blind people and the inconvenience they experienced in lives, local media reported. (Photo by Reuters/Stringer)

People look at a derailed train at their neighbourhood in Liuzhou, Guangxi Zhuang Autonomous Region, December 3, 2014. The train derailed and crashed into a residential complex on Wednesday morning, according to local media. The cause remains unknown and no injuries were reported. (Photo by Reuters/Stringer)

Schoolgirls have their picture taken after praying for the health of Thailand's King Bhumibol Adulyadej at the Siriraj hospital where he is staying, in Bangkok December 4, 2014. The revered King, the world's longest reigning monarch, will turn 87 years old on December 5. (Photo by Damir Sagolj/Reuters)

Girls in traditional costumes participate in an event celebrating the upcoming birthday of Thailand's King Bhumibol Adulyadej, near the Grand palace in Bangkok December 4, 2014. (Photo by Damir Sagolj/Reuters)

Thai Buddhists monks pray in front of the Emerald Buddha (C) during the ceremony on the occasion of Thai King Bhumibol Adulyadej's 87th Birthday anniversary at the Royal Palace compound in Bangkok, Thailand, December 4, 2014. Thousands of Thai Buddhists are to join the prayer ceremony for the world's longest serving monarch on December 5. (Photo by Narong Sangnak/EPA)

Military cadets take pictures of themselves during a ceremony celebrating the birthday of Thailand's King Bhumibol Adulyadej outside the Grand Palace in Bangkok December 5, 2014. King Bhumibol canceled a public appearance on his 87th birthday on Friday on the advice of doctors, disappointing thousands outside a hospital where he is staying, hoping for a glimpse of the world's longest-reigning monarch. (Photo by Damir Sagolj/Reuters)

A protester stands in front of a truck to block Lincoln Tunnel during a demonstration against the grand jury decision not to indict the police officer in the death of Eric Garner, in the Manhattan neighborhood of New York December 3, 2014. A New York City grand jury decided not to charge a white police officer in the chokehold death of Garner, an unarmed black man, sparking outrage and protests on Wednesday, and the U.S. Justice Department said it would investigate the incident. (Photo by Carlo Allegri/Reuters)

A NYPD policeman (R) reacts next to people protesting against the Staten Island death of Eric Garner during an arrest in July, at midtown Manhattan in New York December 3, 2014. (Photo by Eric Thayer/Reuters)

A demonstrator protests recent grand jury decisions not to indict police officers in the deaths of Michael Brown and Eric Garner, at Boston Common in Boston, Massachusetts December 4, 2014. U.S. Attorney General Eric Holder on Thursday promised a full investigation into the choking death of an unarmed black man by a white New York police officer as protests flared for a second night over a grand jury's decision declining to bring criminal charges in the case. Reaction to Wednesday's decision not to indict officer Daniel Pantaleo for his role in the videotaped confrontation that left 43-year-old Garner dead echoed a wave of outrage sparked nine days earlier by a similar outcome in the fatal shooting of unarmed black teenager Brown by a white policeman in Missouri. (Photo by Brian Snyder/Reuters)

Police prevent protesters from entering Interstate 93 during demonstrations against recent grand jury decisions not to indict police officers in the deaths of Michael Brown and Eric Garner in Boston, Massachusetts December 4, 2014. (Photo by Brian Snyder/Reuters)

Taramuni Ray, 62, cries as she sits on the debris from her burnt hut after a fire occurred at a slum in Kolkata December 4, 2014. Several huts were gutted in the fire but no casualties were reported and the cause of the fire was unknown, local media reported on Thursday. (Photo by Rupak De Chowdhuri/Reuters)

Honor guards stand during a welcoming ceremony Chinese President Xi Jinping held for South African President Jacob Zuma at the Great Hall of the People in Beijing, December 4, 2014. (Photo by Petar Kujundzic/Reuters)

A high-speed train driver prepares to depart from Shanghai Hongqiao railway station in Shanghai December 4, 2014. It will take more than the abrupt cancellation of a high-speed train deal with Mexico to derail China Railway Construction Corp's ambitions to become a global force in transport projects and take on the likes of Siemens, Alstom and Bombardier. (Photo by Aly Song/Reuters)

Workers erect a Christmas tree in St. Peter's Square at the Vatican December 4, 2014. The 70-year-old Christmas tree was donated by the southern Italian region of Calabria. (Photo by Max Rossi/Reuters)

Motorcycles and electric bicycles impounded by the police from their owners after causing traffic accidents are seen at a parking lot in Hefei, Anhui province, December 4, 2014. (Photo by Reuters/Stringer)

A publishing house building is seen in flames in the center of Grozny, Russia, early Thursday, December 4, 2014. A gun battle broke out after midnight Thursday in the capital of Russia's North Caucasus republic of Chechnya, puncturing the patina of stability ensured by years of heavy-handed rule by a Kremlin-appointed leader. Security officials and the leader of Chechnya said gunmen traveling in several cars killed at least three traffic police officers at a checkpoint late at night in the capital of the republic, Grozny. The Moscow-based National Anti-Terrorist Committee said in a statement that after the attack on the traffic police, gunmen occupied a publishing house in the center of Grozny. It said security services, police and emergency services personnel surrounded the building. (Photo by Musa Sadulayev/AP Photo)

The burnt exterior of the Press House, a local media agency, is seen in the Chechen capital Grozny, December 4, 2014. At least six gunmen and three policemen were killed in gun battles in which a building was stormed in the Chechen capital Grozny on Thursday, the leader of the turbulent southern Russian region said. (Photo by Reuters/Stringer)

Shells and a burned police car are scattered on an empty square outside a burned-out publishing house in central Grozny, Russia, Thursday, December 4, 2014. A gun battle broke out early Thursday in the capital of Russia’s North Caucasus republic of Chechnya, puncturing the patina of stability ensured by years of heavy-handed rule by a Kremlin-appointed leader. The violence erupted hours before Russian President Vladimir Putin began his annual state of the nation address in Moscow. (Photo by Musa Sadulayev/AP Photo)